{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd536bd85c9d900fd19aef3fa5ad74d590b8a284cf842f4b9d0d57321cef52cad",
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    "signer": "0x6070556892Dc49299671b2819032D0F3cD76f175",
    "userId": "923355761"
  }
}